11-Oct-2022, 07:50
Hi @Confused
Clock drift correction will be in the next release of Impala. It will improve the alignment between the left and right channels at the main listening position. Without the correction, the misalignment is likely to be very small, but including clock drift correction is still an improvement.
Clock drift results from using a DAC (to drive the speakers) and ADC (sampling the microphone signal) with independent clocks. The most typical case is when using a USB microphone. The microphone has a built-in ADC and clock to drive the ADC. This clock is independent of the clock in the DAC. While the clocks will be running at a standard sampling rate, say 48000 S/s, they will not be precisely 48000 S/s. Clock oscillator accuracy is specified in parts per million. If the clock in the microphone is 50ppm fast, it'll be running at 48002.4 S/s.
Similarly, the clock in the DAC may be running slow by some small amount.
I will provide more detail about all this with the next release.
Clock drift correction will be in the next release of Impala. It will improve the alignment between the left and right channels at the main listening position. Without the correction, the misalignment is likely to be very small, but including clock drift correction is still an improvement.
Clock drift results from using a DAC (to drive the speakers) and ADC (sampling the microphone signal) with independent clocks. The most typical case is when using a USB microphone. The microphone has a built-in ADC and clock to drive the ADC. This clock is independent of the clock in the DAC. While the clocks will be running at a standard sampling rate, say 48000 S/s, they will not be precisely 48000 S/s. Clock oscillator accuracy is specified in parts per million. If the clock in the microphone is 50ppm fast, it'll be running at 48002.4 S/s.
Similarly, the clock in the DAC may be running slow by some small amount.
I will provide more detail about all this with the next release.
